A CMOS G_m-C complex filter with a reconfigurable center and cutoff frequencies in low-IF WiMAX receivers

作     者：程心 杨海钢 高同强 尹韬 

作者机构：Institute of ElectronicsChinese Academy of Sciences University of Chinese Academy of Sciences 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2013年第34卷第7期

页      面：140-146页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：Project supported by the National High Technology Research and Development Program of China(No.2012AA012301) the National Natural Science Foundation of China(No.61106025) 

主　　题：complex filter low-IF receiver WiMAX frequency tuning 

摘      要：This paper presents a reconfigurable fifth-order complex Gm-C filter for different data rates in low-IF WiMAX *** design procedure and linearized measures to realize the complex filter are *** order to achieve the reconfigurability of bandwidth window,the center frequency and the cutoff frequency filter are adjusted simultaneously by changing capacitor values while keeping transconductors ***,the filter integrates an on-chip automatic frequency tuning circuit based on a *** results show that it has an IRR of 32 dB,a THD of -43 dB,and an input-referred noise of 21μ*** chip is fabricated in 0.13μm CMOS process,occupies 0.7×1 mm2,and consumes 4.8 mA current from a 1.2 V power supply.